It's my understanding that if you have a load limiter, when you exceed the max limit it simply shuts you off and then stays off and doesn't auto-reset. There is supposedly some kind of button on the meter and you're supposed to shut off all your heavy draw loads and then pull the button on the meter and push it back it in to restore power. That's all I know and can't find more on the internet. I wonder if it's instantaneous or has a delay of some sort?
Maybe he could benefit from a demand controller of some sort to shut off non-essential loads in a priority sequence? I made my own for our TT to shut the electric heaters off while kitchen appliances, hair dryer, etc. are turned on. 7KW isn't all that low. Is this a larger 50 amp RV with electric heating and 2 or 3 AC units? Voltage may be good now but what about mid-summer with customers on the same transformer all running AC units?
Yes, odd that the poco had no issue with a 200 amp service and then decided to choke him off at 7KW. I'd be wanting a reduced rate if they didn't say anything up front. At least the larger wire helps with voltage drop.
Perhaps you could find some info. on the Mike Holt forum.